Syrian rebels seized a compound held by al-Qaeda-linked terrorists Sunday as their one-time allies used car bombs against them, some of the most serious infighting between fighters battling against the rule of President Bashar Assad.

The rebel-on-rebel fighting against the Islamic State of Iraq and the Levant is the strongest pushback yet from Syrian rebels who have seen their uprising to topple Assad hijacked by al-Qaeda forces seeking to impose Islamic rule in opposition-held portions of the country. (AP)